ADU Impact Fees: Olathe vs Shawnee
How do adu impact fees rules compare between Olathe, KS and Shawnee, KS?
Olathe, KS
Johnson County
Olathe does not charge a dedicated ADU impact fee, but residential construction is subject to the City's Park Excise Tax and Street/Traffic Signal Excise Taxes adopted under O.M.C. Sec. 15.02.180. Standard building permit fees, plan review, and Johnson County Wastewater connection charges also apply. There is no Kansas statewide ADU fee preemption.
View full Olathe rules →Shawnee, KS
Johnson County
No data available yet for Shawnee.
Key Facts Comparison
| Fact | Olathe | Shawnee |
|---|---|---|
| Park Excise Tax | $520 per dwelling unit | - |
| Street Excise | $0.0037 per sq ft of land | - |
| Building Permit | Valuation-based (Sec. 15.02.180) | - |
| Sewer Connection | Johnson County Wastewater fees | - |
| Authority | O.M.C. Sec. 15.02.180 | - |
Highlighted rows indicate differences between cities.
Olathe FAQ
Are there ADU impact fees in Olathe?
Olathe uses excise taxes rather than traditional impact fees. The Park Excise Tax ($520/dwelling unit per the 2021 schedule) and Street/Traffic Signal Excise Taxes ($0.0037/sq ft of land in single-family districts) apply to new residential construction. Building permit fees are valuation-based under O.M.C. Sec. 15.02.180. Confirm ADU applicability with the Building Codes Division.
Does Kansas cap ADU fees and what other costs apply?
No statewide cap. Kansas has no preemption of municipal residential development fees — KSA 12-741 et seq. delegates fee authority to cities. Other costs include separate mechanical/plumbing/electrical trade permits, Johnson County Wastewater connection charges if a new sewer connection is needed, and Johnson County Appraiser property-tax reassessment.
Shawnee FAQ
No FAQs available.
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